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arXiv 1004.5585astro-ph.COastro-ph.HE
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伽马射线暴对广义Chaubergin气体模型的限制

Constraints on the Generalized Chaplygin Gas Model from Gamma-Ray Bursts

R. C. Freitas, S. V. B. Gonçalves, H. E. S. Velten

摘要:

本文以伽马射线暴为宇宙学探针,研究了广义Chaubergin气体模型(GCGM)。为了避免所谓的循环性问题,我们使用宇宙无关的数据集和贝叶斯统计对模型参数施加约束。我们观察到,如果我们采用平坦宇宙,参数$α$的负值是有利的,并且参数$H_{0}$的估计值低于文献中发现的值。

英文摘要:

We study the Generalized Chaplygin gas model (GCGM) using Gamma-ray bursts as cosmological probes. In order to avoid the so-called circularity problem we use cosmology-independent data set and Bayesian statistics to impose constraints on the model parameters. We observe that a negative value for the parameter $α$ is favoured if we adopt a flat Universe and the estimated value of the parameter $H_{0}$ is lower than that found in literature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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